{"id":4918,"date":"2014-11-10T16:14:03","date_gmt":"2014-11-10T20:14:03","guid":{"rendered":"https:\/\/engineswapdepot.com\/?p=4918"},"modified":"2014-11-10T16:14:03","modified_gmt":"2014-11-10T20:14:03","slug":"mercury-racings-four-valve-dohc-lsx-engine","status":"publish","type":"post","link":"https:\/\/engineswapdepot.com\/?p=4918","title":{"rendered":"Mercury Racing’s Four-Valve DOHC LSx Engine"},"content":{"rendered":"

\"Mercury<\/a><\/p>\n

Mercury Racing recently debuted a new four-valve, DOHC V8 engine based on the LSx platform. The one they brought to SEMA 2014 was based on the 6.2L LS3 engine. The only modification to the block was replace the typical cam with a dummy one. But those heads are where the real magic happens. They are able to move more than 400 CFM of air on the intake side. Bangshift estimated it could make 900 horsepower naturally aspirated. Mercury Racing is still testing the engines for durability and looking for the golden number of 500 running hours or about 100,000 miles for land use. Mercury Racing already makes a 9.0L (552 ci) DOHC 4v V8 capable of 1,650 horsepower (1230 kW). So this seems like an extension of the lessons learned from that program.<\/p>\n

\"Mercury<\/a><\/p>\n

\"Mercury<\/a><\/p>\n

Source: Bangshift<\/a> and HotRod<\/p>\n","protected":false},"excerpt":{"rendered":"

Mercury Racing recently debuted a new four-valve, DOHC V8 engine based on the LSx platform. The one they brought to SEMA 2014 was based on the 6.2L LS3 engine. The only modification to the block was replace the typical cam with a dummy one. But those heads are where the real magic happens. They are… Read More »Mercury Racing’s Four-Valve DOHC LSx Engine<\/span><\/a><\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[16],"tags":[],"class_list":["post-4918","post","type-post","status-publish","format-standard","hentry","category-engines"],"jetpack_featured_media_url":"","jetpack-related-posts":[{"id":12559,"url":"https:\/\/engineswapdepot.com\/?p=12559","url_meta":{"origin":4918,"position":0},"title":"Mercury Racing’s 7.0 L DOHC LSx Engine","author":"swaptastic","date":"November 2, 2016","format":false,"excerpt":"Mercury Racing debuted their new DOHC 32-valve SB4 7.0 L V8 crate engine at SEMA 2016. They used the technology developed from their 9.0 L QC4 engine platform to develop this engine. The naturally aspirated motor produces 775 horsepower at 7,500 RPM on pump fuel. The DOHC LSx motor uses\u2026","rel":"","context":"In "DOHC LSx"","block_context":{"text":"DOHC LSx","link":"https:\/\/engineswapdepot.com\/?cat=378"},"img":{"alt_text":"Mercury Racing 32v DOHC 7.0 L LSx V8","src":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2016\/11\/Mercury-Racing-32v-DOHC-7.0-L-LSx-V8-01.jpg?fit=1200%2C845&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2016\/11\/Mercury-Racing-32v-DOHC-7.0-L-LSx-V8-01.jpg?fit=1200%2C845&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2016\/11\/Mercury-Racing-32v-DOHC-7.0-L-LSx-V8-01.jpg?fit=1200%2C845&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2016\/11\/Mercury-Racing-32v-DOHC-7.0-L-LSx-V8-01.jpg?fit=1200%2C845&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2016\/11\/Mercury-Racing-32v-DOHC-7.0-L-LSx-V8-01.jpg?fit=1200%2C845&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":4922,"url":"https:\/\/engineswapdepot.com\/?p=4922","url_meta":{"origin":4918,"position":1},"title":"1955 Chevy Nomad with a DOHC LSx V8","author":"swaptastic","date":"November 17, 2014","format":false,"excerpt":"Mercury Racing recently unveiled a four-valve DOHC V8 based on a LS3 V8. I wondered how long it would be before we saw one of these in a vehicle but we don't have to wait at all. Salvaggio Automotive Design has worked with Mercury Racing in the past and decided\u2026","rel":"","context":"In "Nomad"","block_context":{"text":"Nomad","link":"https:\/\/engineswapdepot.com\/?cat=238"},"img":{"alt_text":"1955 Chevy Nomad with a supercharge Mercury Racing 4v DOHC LSx V8","src":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2014\/11\/1955-Chevy-Nomad-with-Mercury-Racing-4v-DOHC-V8-01.jpg?fit=1200%2C797&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2014\/11\/1955-Chevy-Nomad-with-Mercury-Racing-4v-DOHC-V8-01.jpg?fit=1200%2C797&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2014\/11\/1955-Chevy-Nomad-with-Mercury-Racing-4v-DOHC-V8-01.jpg?fit=1200%2C797&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2014\/11\/1955-Chevy-Nomad-with-Mercury-Racing-4v-DOHC-V8-01.jpg?fit=1200%2C797&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2014\/11\/1955-Chevy-Nomad-with-Mercury-Racing-4v-DOHC-V8-01.jpg?fit=1200%2C797&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":16854,"url":"https:\/\/engineswapdepot.com\/?p=16854","url_meta":{"origin":4918,"position":2},"title":"Walk-Around Video of Mercury Racing’s DOHC LSx V8","author":"swaptastic","date":"June 28, 2017","format":false,"excerpt":"Will Courtney talked with Jason from Mercury Racing about their 7.0 L SB4 DOHC V8 crate motor. The engine is based off a LSx V8 and uses off-the-shelf parts that can be purchased from any number of companies. The engine produces 750 horsepower on 91 octane fuel with a 11.7:1\u2026","rel":"","context":"In "DOHC LSx"","block_context":{"text":"DOHC LSx","link":"https:\/\/engineswapdepot.com\/?cat=378"},"img":{"alt_text":"Mercury Racing 7.0 L SB4 DOHC LSx V8","src":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2017\/06\/Mercury-Racing-7.0-L-SB4-DOHC-LSx-V8.jpg?fit=960%2C720&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2017\/06\/Mercury-Racing-7.0-L-SB4-DOHC-LSx-V8.jpg?fit=960%2C720&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2017\/06\/Mercury-Racing-7.0-L-SB4-DOHC-LSx-V8.jpg?fit=960%2C720&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2017\/06\/Mercury-Racing-7.0-L-SB4-DOHC-LSx-V8.jpg?fit=960%2C720&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":132758,"url":"https:\/\/engineswapdepot.com\/?p=132758","url_meta":{"origin":4918,"position":3},"title":"1967 Camaro Powered by a 750 hp Mercury Racing DOHC 7.0L V8","author":"swaptastic","date":"June 5, 2025","format":false,"excerpt":"Roadster Shop built a special 1967 Camaro for owner Scott Rosenbach in 2019. What made the car so unique is the rare 7.0 L SB4 V8 built by Mercury Racing under the hood. This engine is a naturally aspirated LSx-based DOHC V8 capable of 750 hp (551 kW) at 8000\u2026","rel":"","context":"In "Camaro"","block_context":{"text":"Camaro","link":"https:\/\/engineswapdepot.com\/?cat=112"},"img":{"alt_text":"1967 Camaro with a Mercury Racing 7.0 L SB4 V8","src":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/06\/1967-Camaro-with-a-Mercury-Racing-7.0-L-SB4-V8-12.jpg?fit=1200%2C801&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/06\/1967-Camaro-with-a-Mercury-Racing-7.0-L-SB4-V8-12.jpg?fit=1200%2C801&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/06\/1967-Camaro-with-a-Mercury-Racing-7.0-L-SB4-V8-12.jpg?fit=1200%2C801&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/06\/1967-Camaro-with-a-Mercury-Racing-7.0-L-SB4-V8-12.jpg?fit=1200%2C801&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/06\/1967-Camaro-with-a-Mercury-Racing-7.0-L-SB4-V8-12.jpg?fit=1200%2C801&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":13863,"url":"https:\/\/engineswapdepot.com\/?p=13863","url_meta":{"origin":4918,"position":4},"title":"Is GM Building a DOHC V8","author":"swaptastic","date":"December 29, 2016","format":false,"excerpt":"(photo of Mercury Racing DOHC V8 model) A document that was listed on GM services website (which has been taken down) showed all of the upcoming engines for 2018 vehicles. One of those lines showed a 6.2 L DOHC V8 designated for use in a Corvette with a name of\u2026","rel":"","context":"In "DOHC LSx"","block_context":{"text":"DOHC LSx","link":"https:\/\/engineswapdepot.com\/?cat=378"},"img":{"alt_text":"Mercury Racing DOHC LSx V8","src":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2016\/12\/Mercury-Racing-DOHC-LSx-V8.jpg?fit=960%2C720&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2016\/12\/Mercury-Racing-DOHC-LSx-V8.jpg?fit=960%2C720&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2016\/12\/Mercury-Racing-DOHC-LSx-V8.jpg?fit=960%2C720&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2016\/12\/Mercury-Racing-DOHC-LSx-V8.jpg?fit=960%2C720&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":144898,"url":"https:\/\/engineswapdepot.com\/?p=144898","url_meta":{"origin":4918,"position":5},"title":"1969 Camaro with a 7.0 L SB4 V8","author":"swaptastic","date":"February 5, 2026","format":false,"excerpt":"Brett Schmeski and his company Mountain Home Street Rods (MHSR) built this 1969 Camaro RS\/SS called \"Mercury Rising\" and won 2021 Goodguys Street Machine of the Year. The classic muscle car is powered by a 7.0 L SB4 V8 built by Mercury Racing. The LS7-based motor features custom DOHC heads\u2026","rel":"","context":"In "Camaro"","block_context":{"text":"Camaro","link":"https:\/\/engineswapdepot.com\/?cat=112"},"img":{"alt_text":"1969 Camaro with a Mercury Racing 7.0 L SB4 V8","src":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2026\/02\/1969-Camaro-with-a-Mercury-Racing-7.0-L-SB4-V8-01.jpg?fit=1200%2C768&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2026\/02\/1969-Camaro-with-a-Mercury-Racing-7.0-L-SB4-V8-01.jpg?fit=1200%2C768&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2026\/02\/1969-Camaro-with-a-Mercury-Racing-7.0-L-SB4-V8-01.jpg?fit=1200%2C768&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2026\/02\/1969-Camaro-with-a-Mercury-Racing-7.0-L-SB4-V8-01.jpg?fit=1200%2C768&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2026\/02\/1969-Camaro-with-a-Mercury-Racing-7.0-L-SB4-V8-01.jpg?fit=1200%2C768&ssl=1&resize=1050%2C600 3x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=\/wp\/v2\/posts\/4918","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4918"}],"version-history":[{"count":0,"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=\/wp\/v2\/posts\/4918\/revisions"}],"wp:attachment":[{"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4918"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4918"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4918"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}